"I was told that [Chartres-Abbott] made a shocking mess of her, bit hunks out of her," the witness told the court.

"I was told quite a fair bit about that, and [Chartres-Abbott] raped her and left her for dead."

The witness also told the court he was asked by Shea if he knew anyone who "would be interested in... harming Chartres-Abbott".

"I definitely said I'd take care of it personally," the witness added.

The witness testified that he accepted no payment for the killing, calling it a "favour for a favour".

The witness gave evidence that the third defendant, Goussis, who was previously sent to prison for the murders of underworld figures Lewis Moran and Lewis Caine, drove him to Chartres-Abbott's house on the day of the killing.

But the jury was not convinced with that version of events.

Lawyers for the trio argued the unnamed witness was a well-known liar who could not be believed.

They argued the three men had nothing to do with murder.

The three defendants were also cleared of manslaughter.

There was applause from the accused and their relatives when the jury left the court.

As the not guilty verdicts were read out, the men nodded and said thank you and shook hands in the dock.

You have no doubt been hearing a lot about the Paris Agreement and know that it pertains to climate change, but are too embarrassed at this stage to ask for an overall explanation of what it's all about.